Cheap fare provider carrying airline's frequent fliers in prime locations (4)
I believe the answer is:
caff
'cheap fare' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for caff that I've seen before include "Eating-place" , "eatery" , "snack bar" .)